When Using Collection 6.0 Data:Collection 006 (C6)To determine the Collection version of the data you used or are using, look at the HDF filename. If there is a ".006." field in the HDF filename, then it's Collection 6.0 data.

When Using Collection 6.1 Data:Collection 061 (C61)To determine the Collection version of the data you used or are using, look at the HDF filename. If there is a ".061." field in the HDF filename, then it's Collection 6.1 data.